1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1997-1999 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #include <stdio.h> 28 #include <unistd.h> 29 #include <sys/types.h> 30 #include "parser.h" 31 #include "trace.h" 32 #include "util.h" 33 #include "db.h" 34 #include "symtab.h" 35 #include "io.h" 36 #include "printfuncs.h" 37 #include "errlog.h" 38 #include "parseproto.h" 39 40 static void generate_interface_predeclaration(char *, ENTRY *); 41 static void generate_linkage_function(char *, char *); 42 43 44 /* 45 * generate_linkage -- make code for the linkage part of an individual 46 * interface. Assumes Bodyfp. 47 */ 48 void 49 generate_linkage(ENTRY *function) 50 { 51 char *library_name = db_get_current_library(), 52 *function_name; 53 char composite_name[MAXLINE]; 54 55 errlog(BEGIN, "generate_linkage() {"); 56 57 function_name = name_of(function); 58 (void) snprintf(composite_name, sizeof (composite_name), 59 "%s_%s", library_name, function_name); 60 61 /* Print the predeclaration of the interceptor. */ 62 generate_interface_predeclaration(composite_name, function); 63 /* Collect things we'll use more than once. */ 64 65 /* Next the struct used to pass parameters. */ 66 (void) fprintf(Bodyfp, "static abisym_t __abi_%s_%s_sym;\n", 67 library_name, function_name); 68 69 /* The linkage function, */ 70 generate_linkage_function(library_name, function_name); 71 72 (void) fputs("\n\n", Bodyfp); 73 errlog(END, "}"); 74 } 75 76 77 /* 78 * generate_interface_predeclaration -- make things know so the compiler 79 * won't kak. 80 */ 81 static void 82 generate_interface_predeclaration(char *composite_name, ENTRY *function) 83 { 84 decl_t *pp; 85 char *p = symtab_get_prototype(); 86 char buf[BUFSIZ]; 87 88 (void) fprintf(Bodyfp, "\n/* from \"%s\", line %d */\n", 89 symtab_get_filename(), line_of(function)); 90 (void) fprintf(Bodyfp, "static "); 91 92 if (p[strlen(p)-1] != ';') 93 (void) snprintf(buf, BUFSIZ, "%s;", strnormalize(p)); 94 else 95 (void) snprintf(buf, BUFSIZ, "%s", strnormalize(p)); 96 97 decl_Parse(buf, &pp); 98 decl_AddArgNames(pp); 99 symtab_set_prototype(decl_ToString(buf, DTS_DECL, pp, composite_name)); 100 (void) fprintf(Bodyfp, "%s;\n", symtab_get_prototype()); 101 decl_Destroy(pp); 102 } 103 104 105 106 /* 107 * generate_linkage_function -- The linkage function itself. 108 */ 109 static void 110 generate_linkage_function(char *lib, char *func) 111 { 112 (void) fprintf(Bodyfp, 113 "void *__abi_%s_%s(void *real, int vflag) { \n", lib, func); 114 (void) fprintf(Bodyfp, " ABI_REAL(%s, %s) = real;\n", lib, func); 115 (void) fprintf(Bodyfp, " ABI_VFLAG(%s, %s) = vflag;\n", lib, func); 116 (void) fprintf(Bodyfp, 117 " return ((void *) %s_%s);\n}\n", lib, func); 118 } 119